What to grade, what to sell, what to hold.
Sereal is where a card goes after you add it — break cost basis, a grading pipeline that runs the grade-or-don’t math, and a sell desk that ranks what to move next. Comps get re-pulled and flagged stale, so the call isn’t built on a number from two seasons ago.
Invites go out in batches · hosted, invite-only
A card has a life after you add it.
Most of us started in a spreadsheet. It holds the numbers fine — it just won’t tell you the comp went stale, whether the slab clears its grading fee, or which card to list this week. That’s the part Sereal is built for.
Pulled from a break? It already knows what it cost.
Buy three spots in a $400 case and Sereal splits the cost across the cards you actually pulled — so each one carries a real basis instead of $0. Import the Whatnot CSV and it reconciles for you.
Grade it, or don’t — with the math.
Before you mail it, Sereal lines up the raw comp against the graded comp at each grade and runs the expected value. Then it gives you a straight answer — and tracks every submission from queued to graded.
In grading: PSA 43·CGC 15·Unset 7
What to move next, ranked.
The sell desk surfaces stale listings, trim candidates, and lot candidates — comp beside cost — with one tap to lower, watch, or drop into a lot. Connect eBay and your live listings are checked for you, so a stale one flags itself.
The ones you keep, shown like they matter.
Showcase turns the keepers into a photo-led gallery — graded slabs and key issues front and center, the data tucked behind the image. The part of the hobby that’s just for you, not the spreadsheet.
It sits on a collection you actually maintain.
Every card and comic, its cost basis, and its current comp in one place — value and P&L roll up on the dashboard. The floor the rest stands on, not the pitch.
Cards and comics together — photos, basis, and live comp context on every record.
It stays useful with every paid recommendation turned off. The engine is a layer, not the lock-in.
Your ledger, exportable. Tax summary and eBay CSV out whenever you want them.
Connect your account and purchases pull in for review — while your live listings get checked and flagged when they go stale.
Drop in the Whatnot CSV and a night of breaks reconciles into spots, pulls, and per-card cost basis.
Bring your COMC inventory over without retyping it — parsed, matched, and queued for review.
The vault CSV lands as graded items with certs — duplicates caught by cert number.
Roll every card of a player into one position with a thesis — entry, target, and exit rules you set once.
Pick-your-player, pick-your-team, or random — spot costs allocate onto the cards you actually pulled.
Gem-rate odds and grading fees run against raw and slab comps — before you pay to find out.
A phone-first loadout for the card-show floor — your wishlist, budget, and comps in your pocket.